Soil pulverizer



Filed April 23, 1925 2 Sheets-Sheet l INVENTOR. 1.54/2 all er A TTORNEY.

. 1,521,739 March 22,1927 J. PARKER .SOIL PULVEHIZER Filed April 25,1925 2 Sheets-Sheet 2 I N TOR. J56 l-A er' A TTORNEY.

Patented Mar. 22, 1927..

FFICE.

SOIL "EULVEEIZER.

Application filed. April 23, 1925. Serial No. 25,213.

This invention relates to soil pulverizing machines and moreparticularly to that type of machine where the pulverizing of the groundis accomplished by the forward movement of two sets of disks, each setbeing aligned but arranged in staggered relation to each other therebyinsuring a complete pulverizing of the ground passed over.

An object of my invention is to provide a soil pulverizing machine inwhich the center of gravity is located at some point in rear of thecenter line of the main frame.

A further object of the invention is to provide a soil pulverizingmachine that will operate efficiently if it is found necessary totraverse uneven ground.

A still further object is to provide a machine of the class mentionedwhereby the rearwardly aligned set of disks are vertically movable as awhole against a spring action thereby insuring the disks againstbreakage if a stone is encountered.

With these and other objects in view my invention consists of theprincipal features as shown in the drawings described in thespecification and claimed in the claims.

In the drawings:

Fig. 1 is a perspective view of my machine.

Fig. 2 is an end elevation thereof.

Fig. 3 is a top plan view thereof.

Referring more particularly to the drawings wherein similar numeralsrefer to similar parts throughout the several views 1 designates a mainframe consisting of the transverse bars 2 and the end bars 3. The endbars 3 have flangedends 4: that are adapted to be secured to thetransverse bars 2 by rivets or bolts 5. The transverse bars 2 arepreferably formed of angle iron while the end bars 3 are preferablycastings. The end bars 3 are also provided-with the inturned flangedportions 6 that are in turn secured to the transverse bars 2. Thisconstruction insures a very stiff and rigid main frame. Extendingdownwardly from the castings 3 are the arms 7 and 7 forming near theirlower extremities bearings for an axle, said axle carrying thereon thepulverizing disks 8. Pivoted to the arms 7, at the point 9, are thebifurcated arms 10, said arms being provided with the rearwardlyextending portions 11, said portion 11 having formed therein suitablebearings for carrying another axle on which are mounted the pulverizingdisks 12. It will be noted from Fig. 3 that the disks 8 and 12 arearranged in staggered relation to each other so that the ground passedover will be completely pulverized.

Pivoted between the bifurcated arms near their forward extremities arethe guide rods 17. Located adjacent the axle bearings in the arms 7 and7 are the forwardly extending lugs 14 having sockets 15 formed thereinfor receiving the lower end of the compression springs 16. The upperends of the compression springs 16 bear against the collars 13 saidcollars being adjustably mounted on the guide rods 17 and held inposition by the set screws 13. The pressure of the springs 16 actingagainst the bifurcated arms 10 tends to keep the pulverizing disks 12 inengagement with the soil to be worked but allowing the said disks 12 torise out of engagement with the soil if any solid obstruction such as alarge rock is encountered. The guide rods 17 are positioned centrally ofthe springs 16, said rods being slidably mounted in the lugs 14:. Asbest seen in Fig. 2 stops 18 are formed in the castings 3 providing ameans adapted to limit the upward movement of the bifur cated arms 10.It will be seen in Fig. 2 that the pivot points 9 being located closerto the center line of the disks 12 than they are to the forward ends ofthe bifurcated arms 10, the upward thrust of the springs 16 will cause agreater amount of downward pressure to be exerted on the disks 12 thuskeeping said disks in working engagement with the soil even if the soilto be Worked is quite hard. Considerable variation of the pressure onthe disks 12 may be obtained by adjusting the collars 13 by means of theset screws 13'.

Positioned forwardly of the main frame 1 are the steering wheels 19mounted on the axle 20. The axle 20 carries a swivel connection 21 andthe king pin 22. The upper end of the king pin 22 passes through anopening in a bracket 23, said bracket 23 being in turn secured to theforward end of a beam 24. The rearwardly extending portion of the beamat is rigidly secured to the main frame 1. Straddling the bracket 23 andfastened to the king pin 22 is a U shaped bracket 25. Pivoted to thebracket 25 is the drag link 26 to which the draw bar is adapted to besecured. A pair of brace arms 27 are secured at their forward ends tothe brackets 23 and at their rear ends to the transverse bars 2 of themain frame 1.

Situated near the rear end of the beam 24: and secured thereto by meansof the bolt 28 is a seat 29. The seat 29 may be adjusted longitudinallyof the beam 2% by changing the location of the bolts 28 in the holes 30.It will be noted from Fig. 2 that the weight of the driver while ridingin the seat will be atsome point rearwardly of the center line of themain frame. As will be apparent modifications may be made within Widelim its Withoutactually departing from the principles of my invention.

From the foregoing description it becomes evident that the device issimple and efficient in operation, will not easily get out of order,is'composed of few parts and is of consequent low manufacturing cost andprovides a device which accomplishes the objects described.

Having thus fully described my invention its utility and mode ofoperation, what I claim and desire to secure by Letters Patent is a 1. Asoil pulverizing machine comprising a main frame having depending endportions, bearings provided in the respective end portions, a series ofdisks, a shaft for the disks supported in the said bearing, a bifurcatedarm pivotally supported on each of the said depending portions in thebifurcation of which the end portion is positioned, the opposite end ofeach of the said varms having a bearing, a secondseries of diskspositioned in staggered relation to the said first series, a shafttherefor carried in the said arm bearings, a spring at the bifurcatedend of each arm tending to raise the said end and to force the secondseries of disks downwardly, and a stop engaged by the said bifurcatedend limiting the downward movement of the second series of disks.

2. In a soil pulverizing machine, a frame member having depending endport-ions, bearings provided therein, a series of aligned diskssupported by the said bearings, a bifurcated arm pivotally mounted oneach depending portion, the two portions of which arms are positioned onopposite sides of the respective depending portion, the said pivotalpoint of the arm being to the rear of and above the said bearing, a rodpivotally supported at the forward end of each bifurcated arm, eachbearing being provided with an apertured portion in which the respectiverod may play, a coiled spring on the said rods tending to force thebifurcated end of the respective arm upward, a series of aligned disksin staggered relation with the first series carried by the opposite endof he bifurcated arms to the rear of the first series, a wheel supportedtongue extending forwardly of the said frame, the mounting of the twoseries of disks being such that when the said tongue is held inhorizontal position on a practically level surface the springs areplaced under compression. V

3. In a soil pulverizing machine, the combination of a frame havingdepending end portions and a. tongue member extending forwardly thereof,bearings provided in the said end portions forward of the center line ofthe frame, an arm pivoted to each of the said end portions to the rearof av vertical line passing through the bearings and at a point abovethe said bearings, the said arm having a bifurcated end in which therespective end portion of the frame is positioned, bolt connecting theterminals of the said bifurcated ends, a rod supported on the bolt. thesaid bearings each having an aperture'd portion extending forwardlythereof in which the rod may play, a coiled compressing spring on therod, the opposite ends of the said arms each having a bearing, a seriesof aligned disks, shaft therefor supported in the arm bearings, thesecond series of disks being in staggered relation with the firstseries, a steering Wheel pivotally mounted at the forward end of thetongue, a seat member for the operator supported on the machine andpositioning the weight of the operator to the rear of the axis of thefirst series of disks whereby pressure is applied to the second seriestending to compress the sai l springs.

In testimony whereof, I sign this speeification.

JOHN PARKER.

